患者女,65岁,上下颌牙齿面重度磨耗,垂直距离过低需要升高咬合时,选用何种治疗咬合板

题型:单项选择题

问题:

患者女,65岁,上下颌牙齿面重度磨耗,垂直距离过低需要升高咬合时,选用何种治疗咬合板()。

A.稳定咬合板

B.再定位咬合板

C.枢轴咬合板

D.调位性咬合板

E.松弛咬合板

考点:口腔医学(医学高级)口腔医学综合练习口腔医学综合练习题库
题型:单项选择题

2月2日是世界湿地日.我国目前有22个国家级湿地公园,海阳市小孩儿口湿地公园是其中之一.以下不属于湿地生态系统特点的是(  )

A.湿地是在多水和过湿的环境条件下形成的

B.湿地具有净化水源、蓄洪抗旱的作用

C.湿地是生物多样性最丰富的生态系统

D.沼泽是最典型的湿地生态系统

题型:单项选择题

如图所示,将一小段通电直导线分别放在磁场中的a、b两处,电流大小不变且电流方向与磁感应线垂直,关于这一小段通电直导线所受的安培力Fa、Fb及a、b两点处的磁感应强度Ba、Bb大小,下列说法正确的是

A.Ba>Bb

B.Ba<Bb

C.Fa>Fb

D.Fa<Fb

题型:单项选择题

The Oregonian(俄勒冈报) is the daily newspaper for the state of Oregon where the Hagens live. Since it is published in the largest city, which is Portland, most of the readers live within 50 miles of Portland.

From Monday to Saturday, the paper has about 75 pages, of which 20 pages are advertisements. It normally has 5 sections which are called Nation, Sports, Metro(大都会), Living and Business.

Nation is national news mostly with some international news about earthquakes, floods, and tensions(紧张)around the world. Sports cover the professional sports in season, college sports, and high school sports. Metro is local news of the city of Portland which includes political stories, crimes, and good neighbor articles. Living is the section with television programs, movies, comics, music, stories about pets, and advice. Business has listing of more than 10,000 stocks and a regular report about the stock market and business news. The advertising section includes apartments and houses, employment opportunities and items to buy, especially cars and trucks.

On Sunday, the paper is very large weighing more than two kilos. There are additional sections called Art, Books, International, and Travel. Since this is the day most Americans do not work, they have more time for reading. Each of the daily sections is longer so the newspaper is twice the size of the daily sections. However, the advertisements are nearly as many pages as the news on Sunday so the entire paper is more than four times larger than the daily paper.

Some companies print their own advertisements and pay to put them in The Oregonian. These include grocery(杂货) stores, clothing stores, car agencies(代理处), camera and video equipment stores, toy stores, and computer stores. All of the companies feel that the best way to advertise is to put a beautiful color advertisement in every Sunday.

1. The Sunday edition of The Oregonian probably has _____.

A. 75 pages            B. less than 300 pages  

C. more than 300 pages   D. less than 75 pages

2.If you want to seek information about the stock market from The Oregonian, you refer     to the section “_____”.

A. Metro     B. Living     C. Nation    D. Business

3. Who are the regular readers of The Oregonian ?

A. The Hagens.             B. Residents of the Portland area.

C. Businessmen.            D. People who have more time to read newspapers.

4. One reason that the Sunday paper is very large is that _____.

A. it adds four additional sections

B. it has five sections   

C. most Americans do not work that day

D. some companies like to print advertisements in it

题型:单项选择题

从理论上说,社区卫生服务包括公共卫生服务、基层医疗保健服务和社区内的其他特需卫生服务。

题型:单项选择题

下列()特性是干细胞应用领域里最优先考虑影响因素。

A、致瘤性

B、易取材

C、多能性

D、免疫排斥

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